Car-truck.



PATENTED. NOV. 8, 1904.

R. P. LAMONT. OAR TRUCK.

APPLICATION FILED JUNE 25.1903.

N0 MODEL.

Patented November 8, 1904.

PATENT 'OFFICE.

ROBERT P. LAMONT, OF CHICAGO,

ILLINOIS, ASSIGNOR TO SIMPLEX RAILWAY APPLIANCE COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 774,437, dated November 8, 1904.

Application filed June 25, 1903.

To all whom it may concern.-

Be it known that I, ROBERT P. LAMONT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

My invention relates to trucks for railwaycars, and has for its object to secure increased simplicity of construction and economy in cost of manufacture of such devices. 7

More particularly, my invention relates to a new and improved construction of truck-bolster-containing frame or transom. Heretofore such devices have commonly been made of a number of separate side and bottom members fitted to each other and united by bolts and rivets. According to my present invention I propose to form such a bolster-containing frame or transom from a single sheet of plate-steel by pressing the same into a form to produce integral bottom and side walls for the reception and carriage of the springs and bolster proper carried thereby.

Hy invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevational view, partly in longitudinal section, of my improved bolstar-containing frame or transom. Fig. 2 is a top plan view of the same, and Fig. 3 is an end view.

In carrying out my invention I take a plain rectangular sheet of plate-steel of the required dimensions and by means of suitable dies press the same into the trough-shaped form shown in the drawings, producing the integral bottom wall 5 and upright side Walls 6. The upper margins of the latter are bent over outwardly at right angles to the side walls, forminghorizontally-extendingflanges7. Theside walls are preferably cut out, as shown at 8, for greater lightness, while the bottom wall may also preferably have an elongated central opening 9, the margin of which is preferably struck up inwardly, as shown at 10, for the sake of increased rigidity. The side walls are united at their opposite ends by tiebars 11, consisting, preferably, of a strip of Serial No. 163,106. (No model.)

angle-iron having its lower horizontal member 12 cut to exactly fit between the side walls and having the ends of its vertical member bent inwardly at right angles to lie against the inner faces of the upright walls of the frame, as shown at 13.

14 designates the transom guide bars or col-.

as shown at 18, and cooperates with the upper surface of the flange 7 and with the upper margin of the vertical member of the tiebar 11 in forming a seat for the arch-bar.

I The herein-described construction provides a transom of great rigidity and strength, combined with maximum simplicity, efliciency, and economy of manufacture. Being made of sheet or plate steel it is free from the liability to break under sudden shocks or jars, such as often prove fatal to the integrity of cast-metal structures, and being integral in characterthat is, formed from a single blank without joints and connections (except as-to the appurtenances at its ends)-it always retains its original form and integrity of structure.

I claim- 1. A truck-transom formed from a single sheet of plate-steel pressed into a form to yield a horizontal bottom wall and" vertical side walls, and outwardly-extending flanges along the upper margins of the latter, incombination with tie-bars connecting the opposite ends of said side walls, and columns applied to the outer ends of said side walls beneath said marginal flanges, substantially as described.

2. A truck-transom of the character described, consisting of a horizontal bottom wall and vertical side Walls having outwardly-exl side Walls and inwardly-bent ends of the tietending upper marginalflanges all pressed into bars and uniting said parts, substantially as 10 form from a single rectangular sheet of plate described. steel, in combination With tie-bars formed of 5, angle-iron having their end portions bent in- ROBERT P. LAMONT.

Wardly to lie against said side Walls, and col- \Vitnesses: umns applied to the outer ends of said side SAMUEL N. POND, Walls, and rivets passed through said columns, FREDERICK C. GOODWIN. 

